Built-in coffee machine



FIG. 1 is a top left perspective view of a built-in coffee machine according to our new ornamental design;

FIG. 2 is a front view thereof;

FIG. 3 is a bottom left perspective view thereof; and,

FIG. 4 is a bottom right perspective view thereof.

The broken lines are shown for the purpose of illustrating parts of the article that form no part of the claim. 

CLAIM The ornamental design for a built-in coffee machine, as shown and described. 